Improved curtain-fixture



tnted tant J. W. FOARD, or sAN rRANcIsCo, CALIFORNIA.

'Leners Patent No. 92,812, dated .hay 2o, 1869.

:MF1-'roven CURTAIN-FIXTURE.

The Schedule referred to :ln these Letters Patent and making part of thev same.

To all whom it 'may concern.-

Be it known that I, J. W. Fontan, of the city and county of San Francisco, and State of California, have invented anew and improved Window-Shade and Curtain-Fixture; and I do hereby declare that the following is a full, clear, andl exact description 'of the construction and operation of the same, reference being had to the accompanying drawings, making a part oi' this specification, in which- Figure l is a side View, and

Fgiu'e 2 is a front view of the regulating-device.

Figure 3 is a side View, and

Figure 4 is a sectional elevation of the common pulley; and v Figure 5 is a similar View of my improved pulley.

l The object of this invention is'to produce an improved device for adjusting the tension of the cords used in operating window-shades or blinds.

In the drawings- A represents the curtain-roller;

C is the cord, by which it is operated; and

B is a'guide to prevent the cord from ruiming off of the sheave at the end of the roller.

The lower end ofthe cord passes round a sheave, c, which is suppolted `upon a plate, D, gs. 2 and 3, or in a frame, E, iig. 1, lwhich is` capable of sliding or moxing up and down, so as to loosen or tighten the cor( The plate, or-fralne which supports the sheave c, is, by means of another cord, F, or the sliding plate D, connected to a screw-clamp, H, by which it can be fixed at any height, so as to adjust the tension of cord C at pleasure, and maintain it at that degree for any length ottime.

I VVheu a cord, F, is used to connect the screw;

clamp to the adjusting-pulley c, as shown in iig. l, one end of such cord is to be fastened to the window-casing at f. From that point the cord is, preferably,- to pass upward, through a guide, I; thence around a pulley, c', at the lower end of frame Eythence down through 'guide I again, and thence down between two disks, K L, the former of which is attached tothe window-casing W, and the latter of which can be clamped firmly against the former by means of the thumb-screw H. When the sliding plateis used to connect'the screwclamp to the adj listing-pulley, as shown in gs. 2 andv 3, a smooth metal plate, M, or two washers, are interposed between it and the window-casing, to avoid defacing the latter.

The sheave c is supported upon the sliding plate, and the latter is slotted, as shown at g g', and connected to plate M, by means of the thumb-screw H, and a small headed. guide-pin, J, so as to 'be capable of sliding up and down the length of the slots g g.

By loosening 'the screw H, thevplate D can be moved vertically to the required position', in which it can be instantaneously fixed, by aturn of the screw, in the opposite direction.

In order to enable the operator more conveniently to move the plate D up and down, the outer end ot' the spindle, which attaches the sheave c to the plate, is provided with a thumb-piece, e. l

The disks L, figs. 1, 2, 3, may work loosely on rthe screw-stem H, or not, as preferred, and one or more may be employed on each or either side of the cord F or plate D, they operating, in such case, as washers, to prevent the wearing ofthe cord or plate.

The sheaves, or pulleys c are formed dlerently from those heretofore employed for a similar purpose.

Instead of a pulley struck up from sheet-metal, in such a manner as to have a sharpcentral ridge for the bearing-surface, in contact with the supporting-pim'or spindle, as shown in iig. 4, I employ a pulley formed as described, but provided additionally with a hollow cylindrical bearing, inserted into its central opening,

and soldered there, as shown in fig..5, so that the bearing-surface is not a sharp edge, which soon cuts into the supporting-piu, and interferes with the operation of the pulley, but a smooth, continuous, concave surfaee, extending from one end of the central opening of the pulley to the other, and having no tendency to cut into the pin.

The thumb-screw H, and also thel guide-screw J,'

may be screwed directly into the wood of thewi'ndowcasing, instead of being screwed into a plate, M, if preferred.

In case the plate M is employed, as shown in figs. 2 and 3, it needA ntbe. attached to the window-casing, except by the screws H J.

Thefuuction of plate M being solely to protect thcwood from beiuggdethced or worn by the sliding plate, it is'evident that .washers around screws H J, interposed between the plate D,and the window-casing, to separate them, would be a mere equivalent, and might be employed, it' preferred. v

The whole device -is simple, inexpensive, easily adjusted and operated, not-liable to get out of repair, neat and ornamental in appearance, and capablel of being readily applied and used iu connect-ion with any kind'of roller.

Having thus described my invention,

What' 1 claim as new, and desire to secure by LettersPatent, is-

1., The curtain-fastening, consisting of the sheave c,

supported upon a movable frame, E, the screw-clamp H, for fixing the sheave at any required height, and the connecting-cord F, that extends from the sheave tothe screw-clamp, allV constructed to operate together,

Witnesses:

P.. H. BELLINGALL, 4 T. W. Scorza 

